Even the absolute worst case scenario (realistically because of reactor design) isn't that bad since it will simply fizzle away into the ground unlike Chernobyl where “10 tons” of fissile material was blasted into the country side and atmosphere.
Media hype, public ignorance, some willing to make a quick buck and yet others with a Luddite agenda are converging on this issue.
From what I’m reading, the spent fuel pool has 1,700 tons of fuel that would spew into the atmosphere if it seriously catches on fire. Fortunately, you don’t have the graphite fuel coating to burn like you had in Chernobyl. But the fuel mass in that pool is many times larger than Chernobyl.